Biomass and associations of benthic marine macroalgae from the inner Potter Cove (King George Island, Antarctica) related to depth and substrate

被引：0

作者：

María Quartino

Heinz Klöser

Irene Schloss

Christian Wiencke

机构：

[1] Foundation Alfred Wegener Institute,

[2] P.B. 120161,undefined

[3] 27515 Bremerhaven,undefined

[4] Germany,undefined

[5] Instituto Antártico Argentino,undefined

[6] Cerrito 1248,undefined

[7] 1010,undefined

[8] Buenos Aires,undefined

[9] Argentina,undefined

[10] Museo Argentino de Ciencias Naturales "Bernardino Rivadavia",undefined

[11] Av. Angel Gallardo 470,undefined

[12] 1405,undefined

[13] Buenos Aires,undefined

[14] Argentina,undefined

[15] CONICET,undefined

[16] Rivadavia 1917,undefined

[17] 1033,undefined

[18] Buenos Aires,undefined

[19] Argentina,undefined

来源：

Polar Biology | 2001年 / 24卷

关键词：

Biomass; Cluster Analysis; Species Richness; Light Condition; Macroalgae;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The biomass of the benthic marine macroalgae from the inner Potter Cove was studied along a depth profile across different substrates during Antarctic summer. Macroalgal associations were identified by means of cluster analysis. Twenty-two species were found in the study site, approximately half of the species present in the area. This paucity may be explained by the strong preponderance of the brown algae Desmarestia anceps and D. menziesii, which are able to exclude other species by competition for light. The mean biomass of all macroalgae was 1,390 g DW/m2±1,787 g DW/m2. Nine macroalgal associations were identified with different preferences for depth, substrate and the degree of exposure. Overall, there was a tendency for macroalgae to grow on fine substrates with increasing depth. Species richness decreased at 20 m depth, probably due to limiting light conditions. The results are discussed with respect to previous studies in East and West Antarctica.

引用

页码：349 / 355

页数：6